a room is 8.5m long and 6.5m broad and 3.4m high. it has two doors, each measuring (1.5m by1.5m) and two windows, each measuring (2m by 1m). Find the cost of painting its four walls at rs. 160 per square m.
Answers
Answered by
15
➡️ THE ANSWER IS GIVEN ABOVE IN THE PICTURE.
==================================
⭐️ IF YOU LIKE MY ANSWER, PLEASE MARK ME AS BRAINLIEST MATE...............!!!!!!!!
⭐️ FOLLOW ME FOR MORE SOLUTIONS OF YOUR DOUBTS..........!!!!!!!!
⭐️ BE BRAINLY........!!!!!!!!
Attachments:
TeenTitansGo:
well question is not correct... because if question is correct my answer ie correct...but according to the asker your answer is correct therefore question is not correct
A small correction..U have written Area of two doors = 2(1.5 * 1). It should be 2(1.5 * 1.5).
ohh.. Then u have to say that question is incorrect and u have to explain the solution for the correct question!.....
ok
Answered by
13
In order to find the area which should be painted we have to subtract the area of doors and windows from the area of all walls.
Area of four walls = 2( length + breadth ) × height
Area of four walls = 2( 8.5 m + 6.5 m ) × 3.4 m
Area of four walls = 2 × 15 m × 3.4 m
Area of four walls = 102 m²
Door is in the shape of square as sides are equal therefore the area of door will be side²
Area of door = 1.5 m × 1.5 m
Area of door = 2.25 m²
number of doors = 2
Hence, total area covered by doors = 2 × Area of one door
Total area covered by doors = 2 × 2.25 m²
Total area covered by doors = 4.5 m²
Then, windows are in the shape of rectangle as sides are not equal and only measurements are given therefore area of window will be length × breadth
Area of window = 2 m × 1 m
Area of window = 2 m²
Total number of windows = 2
Hence, total area covered by windows = 2 × Area of one window
Total area covered by windows = 2 × 2 m²
Total area covered by windows = 4 m²
Therefore area which is to be painted = total area - area of doors - area of windows
Area which is to be painted = 102 m² - 4.5 m² - 4 m²
Area which is to be painted = 93.5 m²
Cost of painting = Price of painting 1 square metre × area in metres
Cost of painting = Rs 160 / m² × 93.5 m²
Cost of painting = Rs 14960
Area of four walls = 2( length + breadth ) × height
Area of four walls = 2( 8.5 m + 6.5 m ) × 3.4 m
Area of four walls = 2 × 15 m × 3.4 m
Area of four walls = 102 m²
Door is in the shape of square as sides are equal therefore the area of door will be side²
Area of door = 1.5 m × 1.5 m
Area of door = 2.25 m²
number of doors = 2
Hence, total area covered by doors = 2 × Area of one door
Total area covered by doors = 2 × 2.25 m²
Total area covered by doors = 4.5 m²
Then, windows are in the shape of rectangle as sides are not equal and only measurements are given therefore area of window will be length × breadth
Area of window = 2 m × 1 m
Area of window = 2 m²
Total number of windows = 2
Hence, total area covered by windows = 2 × Area of one window
Total area covered by windows = 2 × 2 m²
Total area covered by windows = 4 m²
Therefore area which is to be painted = total area - area of doors - area of windows
Area which is to be painted = 102 m² - 4.5 m² - 4 m²
Area which is to be painted = 93.5 m²
Cost of painting = Price of painting 1 square metre × area in metres
Cost of painting = Rs 160 / m² × 93.5 m²
Cost of painting = Rs 14960
Similar questions